lkml.org 
[lkml]   [2006]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 1/1] oprofile: Add a special cookie for the VDSO region
Emit a special VDSO_COOKIE for VDSO regions instead of simply marking
them as anon.

Signed-off-by: Amitabha Roy <amitabha.roy@gmail.com>
---
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 78c2e6e..7f879db 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -250,7 +250,14 @@ static unsigned long lookup_dcookie(stru
vma->vm_file->f_path.mnt);
*offset = (vma->vm_pgoff << PAGE_SHIFT) + addr -
vma->vm_start;
- } else {
+ }
+#ifdef CONFIG_X86_32
+ else if(mm->context.vdso==vma->vm_start){
+ cookie = VDSO_COOKIE;
+ *offset = addr;
+ }
+#endif
+ else {
/* must be an anonymous map */
*offset = addr;
}
diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h
index 9241627..edc8ee2 100644
--- a/drivers/oprofile/event_buffer.h
+++ b/drivers/oprofile/event_buffer.h
@@ -35,6 +35,7 @@ #define CTX_TGID_CODE 7
#define TRACE_BEGIN_CODE 8
#define TRACE_END_CODE 9

+#define VDSO_COOKIE ~1UL
#define INVALID_COOKIE ~0UL
#define NO_COOKIE 0UL
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2006-12-11 10:59    [W:0.920 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site